Subcoronary Allograft Aortic Valve Replacement: Parametric Risk-Hazard Outcome Analysis to a Minimum of 20 Years

The use of antibiotic-sterilized allografts for subcoronary aortic valve replacement confers low operative mortality and excellent long-term survival with durability matching any other nonmechanical device. Significantly reduced time-related risk of reoperation and excellent internal to external diameter ratio renders allograft aortic valve replacement especially ideal for smaller roots.